Hubble Captures Rare Triple-Moon Conjunction

February 5, 2015 5:27 PM

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Published by Klaus Schmidt on Thu Feb 5, 2015 5:48 pm via: NASA

Firing off a string of action snapshots like a sports photographer at a NASCAR race, NASA’s Hubble Space Telescope captured the rare occurrence of three of Jupiter’s largest moons racing across the banded face of the gas-giant planet: Europa, Callisto, and Io.